Box-strap.



` P.1. FORBES.

Box smi. APPLKCATION FILED SEFTJS, |916.

Patented Mr. 27,1917.

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PHILIP JONES FORBES, OF BROOKLYN, N EW YORK.

BOX-STRAP.

Specification of Letters Patent.

Patented Mar. 27, 1917..

Application led September 23, 1916. Serial No. 121,758.

To all whom it may concern:

Be it known that I, PHILIP J. FORBES, a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Box-Strap, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved box strap which is exceedingly strong and durable in construction, cheap to manufacture and provided with nailing apertures for the passage of nails used to fasten the box strap to a box or other package on which the strap is to be used to reinforce such box or package.

In order to accomplish the desired result, use is made of a box strap formed from a single piece of wire and pressed by suitable dies to provide short circular portions alternating with flat portions of relatively greater length than the short wire portions, the flat portions being provided with nailing holes.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in

which similar characters of reference indicate corresponding parts inl all the views.

Figure 1 is a plan view of the box strap;

Fig. 2 is an edge view of the same;

Fig. 3 is a side elevation of the dies for forming the box strap, and the cutters for forming the nailing holes, the dies, cutters and box strap being shown separate; and

Fig. 4 is an enlarged cross section of the box strap and cutters on the line 4 4 of Fig. 3, and with the cutters in cutting position.

The box strap consists essentially of short circular portions 10 alternating with flat portions 11 of a relatively greater length than the short circular portions 10. The flat portions 11 are provided, preferably at the middle, with nailing holes 12 of a lozenge shape, as plainly indicated in Fig. 1.

The box strap is made from a single piece of round wire 13 fed intermittently in the direction of the arrow shown in Fig. 3, to be subjected while at rest, first, to a pressing action between two dies 14 and 15, of which the die 15 is the anvil die and the die 14 moves toward and from the die' 15 to press the wire 13 with a view to form the flattened portion 11. The dies 14 and 15 are shaped to flatten the wire to a greater extent at the middle than at the ends so that the ends merge into the non-pressed circular portions 10. Thus the flattened portions 11 are somewhat thinner at the middle than at the ends and the latter gradually merge into the circular portions 10. At the next forward feeding movement given to the wire 13 the flattened portion 11 is brought into position between two cutters 16 and 17 to split the flattened portion 11 in a lengthwise direction at the middle thereof to form the nailing hole 12. The cutters 16 and 17 spread the middle of the flattened portion 11 in a lateral direction whereby the nailing hole 12 is made lozenge shaped and a similar shape is practically given to the flattened portion 11. The cutters 16 and 17 when cutting the flattened portion 11 bend the opposite sides thereof at the middle in opposite directions, as plainly indicated in Figs. 3 and 4. At the next forward feed the flattened portion 11 is brought opposite a pair of dies 18 and 19 which press the middle {lattened portion back into flat shape without, however, closing the nailing hole 12. The dies 15 and 19 and the cutter 17 are fixed while the dies 14 and 18 and the cutter 16 are attached to a head 20 having an up and down movement so as to move the dies 14 and 18 and the cutter 16 simultaneously toward and from the corresponding dies 15, 19 and the cutter 17 to accomplish the desired result above described. It is understood that the forward feeding movement given to the wire 13 at the time exceeds the length of the pair of Vdies 14 and 15 so that the portion 10 of the wire remains undisturbed and the wire portions alternate with the flattened portions 11.

A box strap constructed in the manner described is exceedingly strong. and durable especially as portions of the wire from which the strap is made remain undisturbed.

It will also be noticed that owing to the flattened portions 11 the strap can be readily bent at the corners of a box or other pacltage and by the use of the nailing holes 12 nails or staples or the like can be readily driven through these apertures into the material of the box or package to fasten the box strap in place.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. As an article of manufacture, a4 box strap made from a single piece of wire, and comprising short circular portions alternatp ing with fiat `portions of relatively greaterY i lengthY than the shortveireular portions and Vflat portions being provided With nailing .strap indefrom a single piece of Wire and comprising short circular portions alternatingrwith flat portions of relatively greater length than the short circular portions., the Het portions being Wider and thinner at the holes. Y Y .Y middle than at the'ends, and the fiat portions Y 2. AsY anrkarticle of manufacture, a Vbox being provided with nailing holes. VPHILIP JONES FORBES.

tive cents each, by addressing the Commissioner of Patents. Washington, D. C.

gradnally tapering toward their ends, the

v(lorries of this patent may be obtained for 

